Exhaust manifold



FIG. 1 is a top perspective view of an exhaust manifold according to thepresent invention;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines in the drawings illustrate environmental structure andform no part of the claimed design.

CLAIM The ornamental design for an exhaust manifold, as shown anddescribed.